What does it mean that all have sinned and come short of the glory of God?

The phrase 'all have sinned and come short of the glory of God' signifies that every human being, without exception, has violated God's commands and thus falls short of His holiness and righteousness. As stated in Romans 3, this universal condition of sinfulness means that every person is guilty before God and cannot attain the righteousness required to be in His presence. It emphasizes the need for grace, as humans in their natural state are incapable of achieving righteousness through their own efforts. This reality points to the necessity of Jesus Christ, who alone lived a sinless life and provided the perfect sacrifice for sin, equipping believers to be justified before a holy God.